title: Wave shape recovery for terahertz pulse field detection via photoconductive antenna.
abstract: For photoconductive (PC) antennae used as terahertz (THz) detectors, traditional data processing methods should be improved because the space-charge and radiation field screening effects and the time dependence of photocarriers density have not been considered. Through developing a double-probe-pulse THz detection technique and using an equivalent-circuit model to describe PC antennae, we present a new method to restore the THz-field wave shape from the measurement data of currents between two electrodes on the antenna. This method is verified to be effective through building a special THz time-domain spectroscopy system with double probes. This work is significant for the accurate determination of pulse THz fields.
authors.affiliation: Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China. jsliu4508@vip.sina.com
authors.forename: Jinsong
authors.initials: J
authors.lastname: Liu
authors.forename: Si
authors.initials: S
authors.lastname: Zou
authors.forename: Zhengang
authors.initials: Z
authors.lastname: Yang
authors.forename: Kejia
authors.initials: K
authors.lastname: Wang
authors.forename: Kefei
authors.initials: K
authors.lastname: Ye